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LibJS: Add ECMA-262 section/title/URL comments almost everywhere

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As mentioned on Discord earlier, we'll add these to all new functions
going forward - this is the backfill. Reasons:

- It makes you look at the spec, implementing based on MDN or V8
  behavior is a no-go
- It makes finding the various functions that are non-compliant easier,
  in the future everything should either have such a comment or, if it's
  not from the spec at all, a comment explaining why that is the case
- It makes it easier to check whether a certain abstract operation is
  implemented in LibJS, not all of them use the same name as the spec.
  E.g. RejectPromise() is Promise::reject()
- It makes it easier to reason about vm.arguments(), e.g. when the
  function has a rest parameter
- It makes it easier to see whether a certain function is from a
  proposal or Annex B

Also:

- Add arguments to all functions and abstract operations that already
  had a comment
- Fix some outdated section numbers
- Replace some ecma-international.org URLs with tc39.es
This commit is contained in:
Linus Groh 2021-06-13 00:22:35 +01:00
parent 322c8a3995
commit 7327a28ccc
52 changed files with 480 additions and 101 deletions
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18
Userland/Libraries/LibJS/Runtime/PromiseConstructor.cpp
View file

@ -24,7 +24,9 @@ void PromiseConstructor::initialize(GlobalObject& global_object)
auto& vm = this->vm();
NativeFunction::initialize(global_object);
// 27.2.4.4 Promise.prototype, https://tc39.es/ecma262/#sec-promise.prototype
define_property(vm.names.prototype, global_object.promise_prototype(), 0);
define_property(vm.names.length, Value(1));
u8 attr = Attribute::Writable | Attribute::Configurable;
@ -39,6 +41,7 @@ void PromiseConstructor::initialize(GlobalObject& global_object)
define_native_accessor(vm.well_known_symbol_species(), symbol_species_getter, {}, Attribute::Configurable);
}
// 27.2.3.1 Promise ( executor ), https://tc39.es/ecma262/#sec-promise-executor
Value PromiseConstructor::call()
{
auto& vm = this->vm();
@ -46,7 +49,7 @@ Value PromiseConstructor::call()
return {};
}
// 27.2.3.1 Promise, https://tc39.es/ecma262/#sec-promise-executor
// 27.2.3.1 Promise ( executor ), https://tc39.es/ecma262/#sec-promise-executor
Value PromiseConstructor::construct(Function&)
{
auto& vm = this->vm();
@ -67,31 +70,31 @@ Value PromiseConstructor::construct(Function&)
return promise;
}
// 27.2.4.1 Promise.all, https://tc39.es/ecma262/#sec-promise.all
// 27.2.4.1 Promise.all ( iterable ), https://tc39.es/ecma262/#sec-promise.all
JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::all)
{
TODO();
}
// 27.2.4.2 Promise.allSettled, https://tc39.es/ecma262/#sec-promise.allsettled
// 27.2.4.2 Promise.allSettled ( iterable ), https://tc39.es/ecma262/#sec-promise.allsettled
JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::all_settled)
{
TODO();
}
// 27.2.4.3 Promise.any, https://tc39.es/ecma262/#sec-promise.any
// 27.2.4.3 Promise.any ( iterable ), https://tc39.es/ecma262/#sec-promise.any
JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::any)
{
TODO();
}
// 27.2.4.5 Promise.race, https://tc39.es/ecma262/#sec-promise.race
// 27.2.4.5 Promise.race ( iterable ), https://tc39.es/ecma262/#sec-promise.race
JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::race)
{
TODO();
}
// 27.2.4.6 Promise.reject, https://tc39.es/ecma262/#sec-promise.reject
// 27.2.4.6 Promise.reject ( r ), https://tc39.es/ecma262/#sec-promise.reject
JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::reject)
{
auto* constructor = vm.this_value(global_object).to_object(global_object);
@ -105,7 +108,7 @@ JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::reject)
return promise_capability.promise;
}
// 27.2.4.7 Promise.resolve, https://tc39.es/ecma262/#sec-promise.resolve
// 27.2.4.7 Promise.resolve ( x ), https://tc39.es/ecma262/#sec-promise.resolve
JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::resolve)
{
auto* constructor = vm.this_value(global_object).to_object(global_object);
@ -115,6 +118,7 @@ JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::resolve)
return promise_resolve(global_object, *constructor, value);
}
// 27.2.4.8 get Promise [ @@species ], https://tc39.es/ecma262/#sec-get-promise-@@species
JS_DEFINE_NATIVE_GETTER(PromiseConstructor::symbol_species_getter)
{
return vm.this_value(global_object);